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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 02-04-2013, 11:04 PM   #1
biMMer4.4i
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Tech question: what is this?

My oil light came on today so I added a quart of oil, but when I took of the cap, there was a yellow substance that looked/felt like melted cheese on the cap and top of the valve cover. I have no idea what this is or if I should be concerned. It's a 142k mile 02 330i.
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Old 02-04-2013, 11:12 PM   #2
TrippinBimmer
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Old 02-05-2013, 08:19 AM   #3
jamex
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Its a water\oil pudding sludge. You likely make lots of small trips in your car and not allowing all the water to get separated out of your oil by the CCV. Nothing to freak out about just be aware you need to take her out for a nice long cruise regularly.
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Old 02-05-2013, 12:39 PM   #4
biMMer4.4i
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Quote:
Originally Posted by jamex View Post
Its a water\oil pudding sludge. You likely make lots of small trips in your car and not allowing all the water to get separated out of your oil by the CCV. Nothing to freak out about just be aware you need to take her out for a nice long cruise regularly.
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